package socket;

import java.io.*;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;

/**
 * 聊天室的客户端
 */
public class Client {
    private Socket socket;
    public Client(){
        try {
            /*
                实例化Socket时就是与远程服务器建立连接的过程
             */
            System.out.println("正在连接服务器...");
             socket = new Socket("172.88.9.80", 8088);
            System.out.println("与服务器端连接成功!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void start() throws IOException {
        try {
            //低级流，作用:将写出的字节发送给建立连接的远程计算机
            OutputStream out = socket.getOutputStream();
            OutputStreamWriter osw = new OutputStreamWriter(out, StandardCharsets.UTF_8);
            BufferedWriter bw = new BufferedWriter(osw);
            PrintWriter pw = new PrintWriter(bw,true);
            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream(), StandardCharsets.UTF_8));
            Scanner scan = new Scanner(System.in);
            while (true){
                String line = scan.nextLine();
                if ("exit".equals(line)){
                    break;
                }
                pw.println(line);
                String s = br.readLine();
                System.out.println(s);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
                socket.close(); //与服务器断开连接
            }catch (IOException e){
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) throws IOException {
        Client client = new Client();
        client.start();
    }
}
